<template>
  <div class="div-container">
    <div class="login-box">
      <!-- 头像区 -->
      <div class="avatar-box">
        <img src="../assets/logo.png" />
      </div>
      <!-- 登录表单区 -->
      <el-form ref="loginFormRef" label-width="0px" class="login-form" :model="loginForm" :rules="loginFormRules">
        <!-- 用户名 -->
        <el-form-item prop="username">
          <el-input prefix-icon="iconfont icon-user" v-model="loginForm.username"></el-input>
        </el-form-item>
        <!-- 密码 -->
        <el-form-item prop="password">
          <el-input type="password" prefix-icon="iconfont icon-3702mima" v-model="loginForm.password"></el-input>
        </el-form-item>
        <el-form-item class="btns">
          <el-button type="primary" @click="login">登录</el-button>
          <el-button type="info" @click="resetLoginForm">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
  export default {
    data () {
      return {
        loginForm: {
          username: 'admin',
          password: '123456'
        },
        loginFormRules: {
          username: [
            // required: true表示必选项, message表示提示的内容, trigger表示触发的时机
            { required: true, message: '请输入用户名', trigger: 'blur' },
            { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
          ],
          password: [
            { required: true, message: '请输入登录密码', trigger: 'blur' },
            { min: 6, max: 15, message: '长度在 3 到 15 个字符', trigger: 'blur' }
          ]
        }
      }
    },
    methods: {
      // 重置按钮
      resetLoginForm() {
        this.$refs.loginFormRef.resetFields()
      },
      login() {
        this.$refs.loginFormRef.validate(async valid => {
          if (!valid) return false
          const { data: res } = await this.$http.post('login', this.loginForm)
          if (res.meta.status !== 200) return this.$message.error('登录失败！')
          this.$message.success('登录成功')
          window.sessionStorage.setItem('token', res.data.token)
          this.$router.push('/home')
        })
      }
    }
  }
</script>
<style leng="less" scoped>
.div-container {
  background-color: #2b4b6b;
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
}

.login-box {
  width: 450px;
  height: 300px;
  background-color: #fff;
  border-radius: 3px;
  position: relative;
}
.login-box .avatar-box{
  width: 130px;
  height: 130px;
  border: 1px solid #eee;
  border-radius: 50%;
  overflow: hidden;
  padding: 10px;
  box-shadow: 0 0 10px #ddd;
  position: absolute;
  left: 50%;
  transform: translate(-50%, -50%);
  background-color: #FFFFFF;
}
.avatar-box img{
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background-color: #EEEEEE;
}
.btns{
  display: flex;
  justify-content: flex-end;
}
.login-form{
  width: 100%;
  padding: 0 20px;
  box-sizing: border-box;
  position: absolute;
  bottom: 0;
}
</style>
